<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
		<base href="../../../" />
		<script src="page.js"></script>
		<link type="text/css" rel="stylesheet" href="page.css" />
	</head>
	<body>
		<h1>[name]</h1>

		<p class="desc">
			Buffered scene graph property that allows weighted accumulation; used
			internally.
		</p>

		<h2>Constructor</h2>

		<h3>[name]( [param:PropertyBinding binding], [param:String typeName], [param:Number valueSize] )</h3>
		<p>
			-- binding <br />
			-- typeName <br />
			-- valueSize <br />
		</p>

		<h2>Properties</h2>

		<h3>[property:PropertyBinding binding]</h3>

		<h3>[property:TypedArray buffer]</h3>
		<p>
			Buffer with size [page:PropertyMixer valueSize] * 4. <br /><br />
			This has the layout: [ incoming | accu0 | accu1 | orig ]<br /><br />
			Interpolators can use .buffer as their .result and the data then goes to
			'incoming'. 'accu0' and 'accu1' are used frame-interleaved for the
			cumulative result and are compared to detect changes. 'orig' stores the
			original state of the property.
		</p>

		<h3>[property:Number cumulativeWeight]</h3>
		<p>Default is `0`.</p>

		<h3>[property:Number cumulativeWeightAdditive]</h3>
		<p>Default is `0`.</p>

		<h3>[property:Number valueSize]</h3>

		<h3>[property:Number referenceCount]</h3>
		<p>Default is `0`.</p>

		<h3>[property:Number useCount]</h3>
		<p>Default is `0`.</p>

		<h2>Methods</h2>

		<h3>
			[method:undefined accumulate]( [param:Number accuIndex], [param:Number weight] )
		</h3>
		<p>
			Accumulate data in [page:PropertyMixer.buffer buffer][accuIndex]
			'incoming' region into 'accu[i]'.<br />

			If weight is `0` this does nothing.
		</p>

		<h3>[method:undefined accumulateAdditive]( [param:Number weight] )</h3>
		<p>
			Accumulate data in the 'incoming' region into 'add'.<br />
			If weight is `0` this does nothing.
		</p>

		<h3>[method:undefined apply]( [param:Number accuIndex] )</h3>
		<p>
			Apply the state of [page:PropertyMixer.buffer buffer] 'accu[i]' to the
			binding when accus differ.
		</p>

		<h3>[method:undefined saveOriginalState]( )</h3>
		<p>Remember the state of the bound property and copy it to both accus.</p>

		<h3>[method:undefined restoreOriginalState]( )</h3>
		<p>
			Apply the state previously taken via 'saveOriginalState' to the binding.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
	</body>
</html>
